> I really have no idea what you are asking and your code looks quite complex. My issue deals with the separation of implementation details for classes into specific source files. https://github.com/elfring/boot_parameters/blob/d65ffb55c0643aac8cb02126066252e898b12bf9/boost/parser_def.h#L22 > Can you show a small self-contained example? I have not constructed a different one so far which can reproduce my difficulties with the mentioned Boost Spirit/Phoenix template function "bind". Regards, Markus
